The Yak Attack RM1 RAM Mount Kit is a RAM 1.5 in. ball mount kit that includes a 2.5 in. diameter round base and a 2 ball socket arm for 1.5 in. diameter RAM balls. The YakAttack RM1 RAM Mount Kit is perfect when matched up with the YakAttack VisiCarbon Pro Light - Ram Mount, and allows the VisiCarbon to be folded down flat against the deck of the boat. Any RAM product that utilizes a 1.5 in. ball will also work with the YakAttack RM1 RAM Mount Kit.